Google lets you disable Google+ notifications from the web
Ever noticed how there is always an unread notification every time you use a Google web service in the top right corner, and when you click it, it’s some random person who has added you to their circles? Never mind how legit this actually is, it’s just annoying to click on that and just find a Google+ notification, especially when you could be expecting a notification from one of Google’s other services, such as YouTube.
Google has now pushed an update that will let you choose which notifications appear there. Google+ is available by default and depending upon which other services you use you might get additional options. But best of all, you can finally disable Google+ notifications from appearing here.
You just have to click on the notification thing in the corner, and then the cog on the left to get notification options.